Secure Electronic Coupon Delivery via Device-Specific Encryption
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Solution Overview
Problem
Existing electronic coupon delivery systems lack security measures to prevent interception and unauthorized distribution, allowing intended users to forward or intercept coupons, compromising access control to events, transportation, and secured locations.
Innovation Solution
A system that authenticates users by generating a reservation number, encrypting it with a unique mobile device ID, transmitting it securely, and decrypting it using a corresponding string of characters, ensuring only the intended user can redeem the coupon, with optional password verification and display of a barcode for authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electronic coupons are transmitted to mobile devices without encryption, then delivery simplicity is improved, but security and prevention of unauthorized access deteriorates
Solution Approach 1:
The system performs preliminary encryption of the coupon data before transmission to the mobile device. The encryption key is derived from the mobile device's unique identifier, ensuring that the coupon is encrypted in advance using security measures that prevent interception and unauthorized access while maintaining delivery simplicity.
Solution Approach 2:
The system changes the parameter of data encryption by using the mobile device's unique identifier as the encryption key. This transforms the transmission from unencrypted to encrypted state, enhancing security without complicating the delivery process, as the encryption is automatically handled by the system.
2Adaptability or versatility
If electronic coupons are forwarded to additional parties, then distribution flexibility is improved, but access control security deteriorates
Solution Approach 1:
The mobile device acts as an intermediary between the coupon issuer and the final user. The unique identifier of the mobile device serves as a mediator that binds the coupon to a specific device, allowing flexible distribution while maintaining access control security through device-specific encryption.
Solution Approach 2:
The system segments the coupon access control into two parts: the coupon data itself and the device-specific encryption key. This segmentation ensures that even if the coupon is forwarded, only the intended device can decrypt and access the content, maintaining security while allowing distribution flexibility.
3Reliability
If password verification is implemented, then authentication security is improved, but user convenience and operation speed deteriorates
Solution Approach 1:
The system implements self-service authentication by using the mobile device's unique identifier as the encryption key. The device itself provides the authentication mechanism without requiring additional passwords or user input, thereby enhancing security while maintaining user convenience and operation speed.
Data Source
AI summary
A system, method, device and interface for providing and redeeming an electronic coupon that provides for authenticating access of a user to an electronic coupon server, receiving selection from the user of at least one of an event, transportation, secured location, good, authorization, and service, generating a reservation number corresponding to the selection, encrypting the reservation number based on a first string of characters that is uniquely associated with a mobile device that will be utilized for redeeming the electronic coupon, transmitting the encrypted reservation number to the mobile device, retrieving a second string of characters from the mobile device, wherein the second string of characters corresponds to the first string of characters, decrypting the encrypted reservation number on the mobile device using the retrieved second string of characters, generating the electronic coupon from the decrypted reservation number, and presenting the electronic coupon to an authentication device for redemption.